Climate Finance Gap: $300 Billion Annual Goal by 2035 and Developing Countries’ Concerns

The news

Negotiators from nearly 200 countries gathered in Antalya, Türkiye, this week for the COP31 United Nations climate summit, where the familiar dispute over climate finance has resurfaced. Wealthy nations point to rising sums they have mobilised, but developing countries, including India, are questioning how much money actually reaches them, on what terms, and whether it arrives quickly enough to meet the costs of a warming world.

The UN Environment Programme’s 2026 Adaptation Gap Report estimates that developing countries will need about $305 billion a year by 2035 to prepare for climate impacts. Yet developed countries provided only $28.2 billion to $31.7 billion in public money for adaptation in 2024. Even if the aspiration agreed at the previous summit in Brazil to triple this finance by 2035 is met, it would cover only 20-29% of the estimated need, according to the report.

The earlier $100 billion annual goal, pledged in 2009, was first reached in 2022, two years after its target date. The OECD, a club of rich countries, reported that the total rose to $136.7 billion in 2024, exceeding the target for a third consecutive year. However, the OECD total includes loans at face value, export credits, and private investment attributed to public interventions. In 2024, loans accounted for $68.5 billion, or 67% of public climate finance, while grants accounted for $29.7 billion, or 29%. Oxfam, an international non-profit, estimates the 2024 total at $32.7 billion to $44.7 billion using a narrower measure that discounts loans and excludes some sources.

An agreement reached at the climate summit in Azerbaijan in 2024 set a goal of at least $300 billion annually for developing countries by 2035, with developed countries taking the lead. A separate wider ambition seeks $1.3 trillion annually from public and private sources. India has called for at least $1 trillion annually from developed countries, primarily as grants and low-cost loans, insisting that private capital cannot replace the financial responsibility accepted by wealthy countries, especially for adaptation projects that offer no commercial return.

What is the UNFCCC principle of common but differentiated responsibilities?

The United Nations Framework Convention on Climate Change, adopted in 1992 and effective from 1994, embeds the principle of common but differentiated responsibilities and respective capabilities. This principle acknowledges that while all countries share a common obligation to protect the climate system, developed countries bear a greater historical responsibility for greenhouse gas emissions and possess greater financial and technological capacity to act. Article 4.3 of the Convention requires developed country Parties to provide new and additional financial resources to meet the agreed full costs incurred by developing countries in meeting their reporting obligations. Article 4.4 further obliges developed countries to assist particularly vulnerable developing countries in meeting the costs of adaptation. The 1997 Kyoto Protocol operationalised this by setting binding emission reduction targets only for developed nations, reinforcing the differentiated nature of the commitment.

What is the legal basis for the finance obligation?

Under the United Nations climate convention, developed countries accepted an obligation to provide financial resources to help developing countries address climate change. The 2015 Paris Agreement reaffirmed this, stating that wealthy countries should lead in providing and raising climate finance and recognising the importance of public money and grants for countries most vulnerable to climate impacts. For developing countries, this is not charity but part of the bargain behind global climate action, based on historical responsibility and differing financial capacities.

Why do the OECD and Oxfam estimates differ so widely?

The OECD counts public finance provided directly and through multilateral development banks, export credits, and private investment attributed to public interventions, including the full face value of loans. Oxfam uses a narrower measure that discounts loans and excludes some sources, yielding a much lower estimate. The distinction matters because a loan, even at a low interest rate, is still debt that must be repaid, while a grant does not have to be repaid. For poorer countries facing high borrowing costs, a loan for a revenue-earning power project is not the same as a grant for flood protection or a heat action plan.

What has India demanded and why?

India has called for at least $1 trillion annually from developed countries, primarily as grants and low-cost loans. In its formal submission, India insisted that support be affordable, predictable and accessible. This position reflects the concern that a larger headline number will mean little if the money is costly or difficult to access. India is not rejecting private investment or domestic fund-raising, but insists that private capital cannot replace the financial responsibility accepted by wealthy countries, especially where mitigation and adaptation projects offer no commercial return.